如何在c＃中的arcmap中获取lat长度的图层范围

Question

我需要在c＃中的Arcmap中获取图层纬度和经度的范围或边界框。

我最初使用了以下代码，但它并不总是在lat long中给出范围：

public IEnvelope GetExtent(IFeatureLayer PolygonLayer) {
    return PolygonLayer.AreaOfInterest.Envelope;
}

Answer 1

我有一个解决方法。必须预测程度。

public ISpatialReference CreateSpatialRefGCS(ESRI.ArcGIS.Geometry.esriSRGeoCSType gcsType)
{
    ISpatialReferenceFactory spatialRefFactory = new SpatialReferenceEnvironmentClass();
    IGeographicCoordinateSystem geoCS = spatialRefFactory.CreateGeographicCoordinateSystem((int)gcsType);
    return (ISpatialReference)geoCS;
}

public IEnvelope GetExtent(IFeatureLayer PolygonLayer) {
    IEnvelope envelope = PolygonLayer.AreaOfInterest.Envelope;
    envelope.Project(CreateSpatialRefGCS(esriSRGeoCSType.esriSRGeoCS_WGS1984));
    return PolygonLayer.AreaOfInterest.Envelope;
}